Comets visible from the UK

This table lists the interval when comets are expected to be brighter
than 12th magnitude and gives the period of visibility from the UK.

Comet Max From (elsewhere) From (UK) To (UK) To (elsewhere) Notes
2016 M1 (PanSTARRS) 9 2017 October 2017 November 2018 September
2016 R2 (PanSTARRS) 9 ? 2017 April 2017 August 2019 June
2017 K2 (PanSTARRS) 6 2021 November 2024 February Not continuously visible
2017 T2 (PanSTARRS) 3 ? 2019 July 2019 August 2020 September 2021 May Not continuously visible
2018 N2 (ASSASN) 11 2019 July 2020 January
2018 W2 (Africano) 11 2019 August 2019 October
2018 Y1 (Iwamoto) 8 2019 January 2019 March
38P/Stephan-Oterma 9 2018 September 2019 January
46P/Wirtanen 3 2018 August 2019 May
64P/Swift-Gehrels 11 2018 September 2018 December
289P/Blanpain 5? 2019 September 2019 October 2020 March
88P/Howell 9 2020 March 2020 June 2021 January
141P/Machholz 11 2020 November 2021 January
7P/Pons-Winnecke 9 2021 March 2021 May 2021 August
15P/Finlay 9 2021 May 2021 July 2021 September
67P/Churyumov-Geras 7 2021 June 2021 July 2022 April
104P/Kowal 9 2021 November 2022 March
19P/Borrelly 9 2021 September 2021 December 2022 May
81P/Wild 10 2022 October 2023 March 2023 May
62P/Tuchinshan 8 2023 October 2024 March
P/Pons-Brooks 4 2023 November 2024 April
1P/Halley 10 2060 October 2061 March
1P/Halley 1 2061 July 2061 August
109P/Swift-Tuttle 1 2126 January 2126 August